Operating instruction OI/FPD470–EN Rev. A FPD470 Wedge flow meter Differential pressure – primary flow element Measurement made easy Introduction WEDGETM Flow Elements utilize V-shaped restrictions to produce a square root relationship between differential pressure and volumetric flow. Elements are designed for either clean or dirty service and are offered in various materials, pipe sizes, and pressure ratings. The differential pressure is measured by a differential pressure transmitter. Various process connections on the WEDGE are provided for either pneumatic or electronic transmitters or other differential pressure sensing devices. Wedge meters can be flow calibrated and supplied with a factory calibration report, this includes calculations for the user’s process when such data is supplied. The differential pressure measurement is used to calculate flow using a standard wedge flow equation. Contents 1 Health & Safety ..........................................................3 5 Start-Up ................................................................... 16 1.1 Document symbols ...................................................... 3 5.1 Operation ...................................................................16 1.2 Safety precautions ....................................................... 3 5.1.1 Zero check .....................................................16 1.3 Pressure equipment safety ........................................... 4 5.1.2 Span check ....................................................16 1.4 User guidelines ............................................................ 4 5.2 Accuracy ....................................................................16 1.5 Permissible process media (fluids) ................................ 4 1.6 Technical limit process values ...................................... 4 6 Maintenance ........................................................... 16 1.7 Potential safety hazards ............................................... 4 6.1 Removing element from service .................................16 6.2 Inspection ..................................................................16 2 Introduction ...............................................................5 6.3 Reinstallation ..............................................................16 2.1 General ........................................................................ 5 2.2 Model FPD470P – clean service ................................... 5 7 Spares ..................................................................... 17 2.3 Models FPD470F, FPD470C – dirty service .................. 5 2.4 Accuracy ..................................................................... 6 8 Acknowledgements ................................................ 18 2.5 Maximum working pressure ......................................... 6 2.6 Maximum working temperature (all models) ................. 6 Notes ......................................................................... 19 3 Installation ..................................................................7 3.1 Selecting a mounting location ...................................... 7 3.2 Straight pipe run requirements ..................................... 7 3.3 Installation and differential pressure connections .......... 8 3.3.1 General ............................................................ 8 3.3.2 Line installation ................................................. 8 3.3.3 Differential pressure connections ...................... 8 3.3.4 Pipe connections .............................................. 9 4 Dimensions and weights .........................................10 4.1 Series FPD470F with flanged tappings and RFWN end flanges .............................................. 10 1 4.1.1 Sizes 40, 50 and 80 mm (1 /2, 2 and 3 in.) ..... 10 4.1.2 Sizes 100 to 600 mm (4 to 24 in.) ................... 11 4.2 Series FPD470C with chemical-tee tappings and RFSO end flanges ............................................... 12 1 4.2.1 Sizes 15 to 80 mm ( /2 to 3 in.) ....................... 12 4.3 Series FPD470C with chemical-tee tappings and RFWN end flanges .............................................. 13 4.3.1 Sizes 100 to 600 mm (4 to 24 in.) ................... 13 4.4 Series FPD470P with RFWN end flanges ................... 14 4.4.1 Sizes 50 to 150 mm (2 to 6 in.) ....................... 14 4.4.2 Sizes 200 to 600 mm (8 to 24 in.) ................... 15 2 OI/FPD470–EN Rev. A | FPD470 Wedge flow meter | Differential pressure – primary flow element 1 Health & Safety 1.1 Document symbols 1.2 Safety precautions Symbols that appear in this document are explained below: Information in this manual is intended only to assist our customers in the efficient operation of our equipment. Use of this manual for any other purpose is specifically prohibited and DANGER – Serious damage to health / risk to life its contents are not to be reproduced in full or part without prior This symbol in conjunction with the signal word approval of the Technical Publications Department. 'DANGER' indicates an imminent danger. Failure to observe this safety information will result in death or Instructions and procedures in this manual may require special severe injury. precautions to ensure the safety of personnel performing the operations. Explosions could result in death or serious injury; therefore refer to the Warnings in the transmitter Operating NOTICE – Property damage Instructions before performing any operation in this manual. This symbol indicates a potentially damaging situation. Failure to observe this safety information may result in To ensure that our products are safe and without risk to health, damage to or destruction of the product and / or other the following points must be noted: system components. — Read the relevant sections of these instructions carefully before proceeding. IMPORTANT (NOTE) — Observe all warning labels on containers and packages. This symbol indicates operator tips, particularly useful information or important information about the product — Installation, operation, maintenance and servicing must or its further uses. The signal word 'IMPORTANT only be carried out by suitably trained personnel and in (NOTE)' does not indicate a dangerous or harmful accordance with the information given. situation. — Observe all normal safety precautions to avoid the possibility of an accident occurring when operating in conditions of high pressure and / or temperature. — Store chemicals away from heat, protect them from temperature extremes and keep powders dry. Observe all normal safe handling procedures. — When disposing of chemicals, ensure that no two chemicals are mixed. Safety advice concerning the use of the equipment described in this manual or any relevant material safety data sheets (where applicable) may be obtained from the Company address on the back cover, together with servicing and spares information. FPD470 Wedge flow meter | Differential pressure – primary flow element | OI/FPD470–EN Rev. A 3 1.3 Pressure equipment safety 1.5 Permissible process media (fluids) Process media may be used only if: DANGER – Serious damage to health / risk to life — It can be assured that the physical and chemical properties — The Pressure Equipment described in this manual is of the pressure-bearing materials that come into contact supplied, where appropriate, in accordance with with the process medium are not reduced from that the European Directive 97/23/EC and is designed required for operational safety, during the expected lifetime to work in pressurized systems. Take care when of the equipment. installing all equipment and follow the instructions — Process media with unknown properties for erosion given. Failure to do this could result in damage to and / or corrosion may be used only if the operator can equipment and create possible hazards to perform regular and suitable tests to assure the safe operators and other equipment. Only use the condition of the equipment. equipment on the process for which it is designed. Install the equipment into a system that has been 1.6 Technical limit process values designed to allow for venting or draining of the The equipment is intended for use only within the technical limit process. For the necessary safety requirements values specified on the data plate and in the data sheet refer to the appropriate instructions in this manual. (DS/FPD470-EN), including those for: — Do not exceed the pipe vibration levels stated in the — maximum working pressure data sheet (DS/FPD470-EN). Excessive vibration — maximum and minimum operating temperatures could result in damage to the equipment and create possible hazards to other equipment and — maximum vibration levels operators. In addition, all connected pipework must be installed as it was designed, to ensure that there is no possibility of leakage or any 1.4 User guidelines undue stresses or strain acting upon it. Correct use includes the following: — Operation within the technical limit values. 1.7 Potential safety hazards The following potential safety hazards are associated with — Observing and following the information provided on operating the system: permissible media (fluids). —High pressures — Observing and following the instructions provided in the operating manuals. — Product (FPD470) weight — The following uses are not permitted: — Operation as a flexible adaptor in piping; for example, to compensate for pipe offsets, pipe vibrations and/or pipe expansions. — Use as a climbing aid; for example, for assembly